1F80-51
Programmable Electronic Digital Thermostat
WHITE-RODGERS
INSTALLATION AND
OPERATION INSTRUCTIONS
Operator: Save these instructions for future use!
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND/OR PROPERTY DAMAGE.
DESCRIPTION
Your new White-Rodgers 5-Day/2-Day Digital Thermostat uses the technology of a solid-state microcomputer to provide precise time/temperature control. This thermostat offers you the flexibility to design heating and cooling programs that fit your needs.
Features:
•Battery powered (3 “AA” Energizer® alkaline batteries included).
•Separate 5-day (weekday) and 2-day (weekend) programming
•Simultaneous heat and cool program storage
•Preprogrammed temperature control
•Four separate time/temperature settings per 24-hour period
•LCD continuously displays set point, and alternately displays time and room temperature
•Temperature override until next program period
•Manual program override (HOLD temperature)
•User may select either 12or 24-hour clock display
•°F/°C convertibility
•Temperature range 45° to 90°F
•Standard five terminals for single or two-transformer systems
•B and O terminals for single stage heat pumps or damper operation
This thermostat is intended for use with a low voltage system; do not use this thermostat with a line voltage system. If in doubt about whether your wiring is millivolt, line, or low voltage, have it inspected by a qualified heating and air conditioning contractor or electrician.
Do not exceed the specification ratings.
All wiring must conform to local and national electrical codes and ordinances.
This control is a precision instrument, and should be handled carefully. Rough handling or distorting components could cause the control to malfunction.
PRECAUTIONS
! CAUTION
To prevent electrical shock and/or equipment damage, disconnect electric power to system at main fuse or circuit breaker box until installation is complete.
! WARNING
Do not use on circuits exceeding specified voltage. Higher voltage will damage control and could cause shock or fire hazard.
Do not short out terminals on gas valve or primary control to test. Short or incorrect wiring will damage thermostat and could cause personal injury and/or property damage.
ELECTRICAL DATA
Electrical Rating:
8 to 30 VAC 50/60 Hz. or D.C.
0.05 to 1.5 Amps (Load per terminal)
1.5 Amps Maximum Total Load (All terminals combined)
THERMAL DATA
Setpoint Temperature Range:
45°F to 90°F (7°C to 32°C)
Operating Ambient Temperature Range:
32°F to 105°F
Operating Humidity Range:
0 to 90% RH (non-condensing)
Shipping Temperature Range:
-40°F to 150°F
SPECIFICATIONS
APPLICATIONS
For use with:
•Standard heat/cool or heat only systems
•Electric heat systems
•Gas or oil fired systems
•Gas systems with intermittent ignition devices (I.I.D.) and/or vent dampers
•Hydronic (hot water or steam) systems
•Single-stage heat pump systems
•Millivolt systems
DO NOT USE WITH:
•Multi-stage systems
•Systems exceeding 30 VAC and 1.5 amps
•3-wire zoned hydronic heating systems
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WHITE-RODGERS DIVISION |
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PART NO. 37-5285E |
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EMERSON ELECTRIC CO. |
Printed in U.S.A. |
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9797 REAVIS ROAD |
Replaces 37-5285D |
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ST. LOUIS, MISSOURI 63123-5398 |
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0004 |
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INSTALLATION
REMOVE OLD THERMOSTAT
1.Shut off electricity at the main fuse box until installation is complete. Ensure that electrical power is disconnected.
2.Remove the front cover of the old thermostat. With wires still attached, remove wall plate from the wall. If the old thermostat has a wall mounting plate, remove the thermostat and the wall mounting plate as an assembly.
3.Identify each wire attached to the old thermostat using the labels enclosed with the new thermostat.
4.Disconnect the wires from old thermostat one at a time. DO
NOT LET WIRES FALL BACK INTO THE WALL.
5.Install new thermostat using the following procedures.
ELECTRIC HEAT OR SINGLE-STAGE
HEAT PUMP SYSTEMS
Read entire paragraph before setting electric heat switch. If you are unsure of your application, contact a qualified serviceperson.
If you have a single-stage heat pump system, OR your system uses central electric heat, where the blower is energized by a separate circuit through the fan relay (meaning that the fan turns on immediately on call for heat), then the switch on the back of the thermostat base must be moved to the “ELECTRIC” position (see fig 1). If the thermostat is energizing electric heat sequencers, the switch MUST remain in the “GAS” position.
If you must move the switch to the “ELECTRIC” position (to the left), use a small screwdriver or pencil.
ATTACH THERMOSTAT BASE TO WALL
1.Remove the packing material from the thermostat. Gently pull the cover straight off the base. Forcing or prying on the thermostat will cause damage to the unit. If necessary, move the electric heat switch (see ELECTRIC HEAT SYSTEMS, above).
2.Connect wires beneath terminal screws on base using appropriate wiring schematic (see figs. 3 through 10).
3.Place base over hole in wall and mark mounting hole locations on wall using base as a template.
4.Move base out of the way. Drill mounting holes.
5.Fasten base loosely to wall, as shown in fig. 2, using two mounting screws. Place a level against bottom of base, adjust until level, and then tighten screws. (Leveling is for appearance only and will not affect thermostat operation.) If you are using existing mounting holes, or if holes drilled are too large and do not allow you to tighten base snugly, use plastic screw anchors to secure subbase.
6.Push excess wire into wall and plug hole with a fire-resistant material (such as fiberglass insulation) to prevent drafts from affecting thermostat operation.
BATTERY LOCATION
This thermostat requires 3 “AA” alkaline batteries to operate. Batteries are installed in the thermostat at the factory with a battery tag to prevent power drainage. You must remove the battery tag to engage the batteries and provide power to the thermostat.
If the word BATTERY is displayed, the batteries are low and should be replaced with fresh “AA” Energizer® alkaline batteries. To replace the batteries, install the batteries along the top of the base (see fig. 2). The batteries must be installed with the positive (+) ends to the left.
ELECTRIC 
GAS
Electric/Gas switch
Figure 1. Back of thermostat base
Alkaline batteries (3 "AA"– install "+" ends to the left)
Screw anchors
W |
RH |
RC |
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G |
B |
Y |
O |
Mounting
holes
Figure 2. Thermostat base
HYDRONIC (HOT WATER OR STEAM)
HEATING SYSTEMS
This thermostat is set to operate properly if you have a forcedair heating system. If you have a hydronic heating system (a system that heats with hot water or steam), you must set the thermostat to operate properly with your system. While in the HEAT mode, change the setting by pressing and holding SET TIME and VIEW PRGM buttons at the same time until the correct setting is displayed (A for forced air; H for hydronic systems). If there is a loss of battery power, or when you change batteries, you must repeat this operation once battery power is restored.
NOTE
If you do not press both buttons at the same time, A or H will not be displayed. If this happens, press RUN PRGM, then press and hold SET TIME and VIEW PRGM at the same time.
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